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COMEDK2013ChemistryHaloalkanes and Haloarenes

The order of reactivities of methyl halides in the formation of Grignard reagent is

Options

  1. ACH ₃ I > CH ₃ Br > CH ₃ Cl
  2. BCH ₃ Cl > CH ₃ Br > CH ₃ I
  3. CCH ₃ Br > CH ₃ Cl > CH ₃ I
  4. DCH ₃ Br > CH ₃ I > CH ₃ Cl

Correct answer

A. CH ₃ I > CH ₃ Br > CH ₃ Cl

Step-by-step solution

The order of reaction of methyl halides increases from fluorine to iodine due to decrease in C-X bond strength. The order of reactivities of methyl halides in formation of Grignard reagent is CH ₃ I > CH ₃ Br > CH ₃ Cl

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